What is the emote_user.dat file?

How can I upload any file type? And just display the uploaded file picture. What do I need to cut out of the following code?

• I'm using the following code: <?php if ((($_FILES["file"]["type"] == "image/gif") || ($_FILES["file"]["type"] == "image/jpeg") || ($_FILES["file"]["type"] == "image/xjpeg") || ($_FILES["file"]["type"] == "image/xpng") || ($_FILES["file"]["type"] == "image/png") || ($_FILES["file"]["type"] == "image/bmp") || ($_FILES["file"]["type"] == "image/jpg") || ($_FILES["file"]["type"] == "image/JPG") || ($_FILES["file"]["type"] == "image/XJPG") || ($_FILES["file"]["type"] == "image/xjpg") || ($_FILES["file"]["type"] == "image/pjpeg")) && ($_FILES["file"]["size"] < 40000000000000000)) { if ($_FILES["file"]["error"] > 0) { echo "Return Code: " . $_FILES["file"]["error"] . "<br />"; } else { echo "Upload: " . $_FILES["file"]["name"] . "<br />"; echo "Type: " . $_FILES["file"]["type"] . "<br />"; echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />"; echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br />"; if (file_exists("upload/" . $_FILES["file"]["name"])) { echo $_FILES["file"]["name"] . " already exists. "; } else { move_uploaded_file($_FILES["file"]["tmp_name"], "upload/" . $_FILES["file"]["name"]); echo "Stored in: " . "upload/" . $_FILES["file"]["name"]; include('SimpleImage.php'); $image = new SimpleImage(); $image->load('upload/' . $_FILES["file"]["name"]); $image->resizeToWidth(250); $image->save('upload/picture2.png'); print("<br><b>Congrats!</b><br><img alt='' src='upload/picture2.png' />"); } } } else { echo "Invalid file issue: " . $_FILES["file"]["error"]; } ?>

• Answer:

  Never rely on the file type information coming from the browser because it may be fake and you may victim of security attacks. Instead use the PHP getimagesize function to check if it is really an image of supported format. http://www.php.net/getimagesize